Question

Questão 10
Resolvendo a equação do 1° grau 5(x - 3) - 4(x + 2) = 2 + 3(1 - 2x), qual será a raiz?
a) 1
b) 2
c) 3
d) 4​

Answer 1

5 . ( x - 3 ) - 4 . ( x + 2 ) = 2 + 3 . ( 1 - 2x)

5x - 15 - 4x - 8 = 2 + 3 - 6x

5x + 6x - 4x = +15 +2 +3 +8

7x = 28

x = 28/7

x = 4

Answer 2

5x-15-4x+8=2+3-6x

5x-4x+6x=2+3-15

x+6x=5-15

7x=-10

x=-10/7

x=1,42